Device for opening box covers



Patented Mar. 21, 1922.

E. CARLSN. DEVICE FOR OPENING BOX COVERS. APPLICATION FILED APR. 8. 1920.

IIIII I'IIIIIIII UNITED STATESv PATENT y OFFICE.

EMANUEL CARLSON, on lYoNKEns, NEW YORK.

DEVICE FOR OPENING BOX COVERS.

Application filed April 8,

` the following is a specification.

This invention relates to devices for opening box covers such as air tight fitting covers of tin boxes.

One of the objects of this invention is to provide a device of this type characterized -by simplicity of construction and efficiency of action in a high degree.

Another object is to provide a practical device of the above type in which the parts may be secured to the box or box cover without piercing through the material thereof.

A further object of this invention is to provide a device o-f the above type which may be applied to any box having a close fitting cover and which may be easy and simple of manipulation.

Other objects will in part be obvious and in part pointed ont hereinafter.

In the drawing in which is shown one vof the variouspossible illustrative embodiments of this invention,

Fig. 1 is a perspective view of a box provided with an embodiment of this invention with the opening device in the process of being operated; l

Fig. 2 is a cross-sectional view thereof cut along line 2-2 of Fig. 1;

Fig. 3 is a detailed broken away vertical elevation in section showing the means for attaching the operating member of the device to the cover; and

Fig. l is an end elevation of a box and cover viewed to show this Operating member. Referring in detail to theV drawing, 10 represents the box and 11 the cover therefor. The body of the box is provided with an annular offset or flange 12 of comparatively substantial width. Secured to the cover is an operating member 13 comprising a handle 111 whereby it may be manipulated by the hand of the user as shown in dotted linesin Fig. 1, and extending from either end vis a lever opener 15, inthe form of an extension formed with a head portion 16 adapted to yengage and press down against the annular flange 1Q, to separate the box from the cover when the handle is lifted as will be readily understood. Any suitable meansA may of V Specification of Letters Patent. Patented BIgu'. 21', 1922.

1329. Serial No. 372,254.

course be applied for securing the lever openers and handle to the box cover. In the embodiment of the invention shown in the drawing, the handle and lever openers are pivoted on the cover by means of a depression 17 in which is fulcrumed a straight pivot portion 18 intermediate the lever opener extension and handle and integral therewith. To maintain the operating member in pivoted position on the cover, a holding strip 19 is soldered or otherwise secured over the pivot portions 18, and may fill in the depressed portion 17 of the cover so as to be Hush with the top thereof as shown, to leave the cover smooth and facilitate stacking of the boxes. If desired, a ridge or depression 20 may be formed in the cover to receive the handle 14 so that the latter may be flush with the cover andthe depression 17 may be part of this ridge as will be readily understood.

As will be readily seen, the operating member 13 may be secured to the bottom ofthe box instead of the cover if desired and the iange 12 formed on the cover instead .of on the body of the box and the Operation thus reversed to separate the cover from the box. It will be noted that in thus securing the operating member to thecover or box in the manner hereinbefore described and in thus forming either of the latter with the flange to co-operate therewith, there is avoided the piercing of the material'of these members for the purpose of Vsecuring the opening device.

It will also be clear that instead of the ange 12 either on the box or on the cover, projecting portions may be provided on one of these members and disposed in operative relation to the lever openers 15 and the box may be then opened by the same Operation as hereinabove described and explained.` Y

As various other possible embodiments might be made of the above invention and as various changes might be made in the embodimentabove `set forth, it is vto be under-V stood that all matter 'herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a ldescribed my invention, I

adapted to eet against seid .iiange, and 10 means disposed over seid depression for holding said pivot means in position therein, said means being flush with the surface of the member having the depression.

Signed at New York city, in the county of l5 New York and State of New York this 6th Vday of April, A.D..1920.

EMANUEL CARLSON. 

